Bug 1377123 - Screen brightness broken after kernel 4.6.7-200
Summary: Screen brightness broken after kernel 4.6.7-200
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 23
Hardware: x86_64
OS: Linux
unspecified
high
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-09-18 18:24 UTC by jberry02
Modified: 2016-10-17 12:51 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2016-10-17 12:51:17 UTC
Type: Bug

Attachments (Terms of Use)
output of dmesg (52.73 KB, text/plain)
2016-09-27 21:10 UTC, m.oliver 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Description jberry02 2016-09-18 18:24:16 UTC 
Description of problem: Unable to adjust screen brightness on Dell XPS 13.  Fn keys show the bios gauge, but don't do anything.  Brightness slide from within KDE power management settings don't do anything.  Everything works with kernel 4.6.7-200.fc23.x86_64, but fails with 4.7.2-101.fc23.x86_64 and 4.7.3-100.fc23.x86_64.


Version-Release number of selected component (if applicable): 4.7.2-101.fc23.x86_64 and 4.7.3-100.fc23.x86_64.


How reproducible:  Always


Steps to Reproduce:
1.Boot affected kernel
2.attempt to adjust the screen brightness
3.

Actual results:Screen brightness cannot be adjusted.


Expected results:Screen brightness can be adjusted.


Additional info: Bug/error introduced between 4.6.7-200.fc23.x86_64 and 4.7.2-101.fc23.x86_64.
Comment 1 m.oliver 2016-09-27 21:09:58 UTC 
Exactly the same here.  I attach my demsg output for detailed hardware information.
Comment 2 m.oliver 2016-09-27 21:10:32 UTC 
Created attachment 1205329 [details]
output of dmesg
Comment 3 jberry02 2016-10-15 22:19:24 UTC 
Problem appears to be resolved in kernel 4.7.7-100.fc23.x86_64.
Comment 4 m.oliver 2016-10-16 11:53:20 UTC 
Yes, it's resolved, already in 4.7.6-100.fc23.x86_64
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